A new electrochemical immunosensor for the detection of protein biomarker platelet-derived growth factor BB (PDGF-BB) was developed based on graphene oxide (GO) initiated silver enhancement. The immunosensor was fabricated based on the traditional sandwich protocol using secondary anti-PDGF-BB antibody (Ab(2)) modified GO as label. Gold electrode was first modified with self-assembled monolayer (SAM) to block the electron transfer between the electrode and K(3)Fe(CN)(6) solution. After the… CONTINUE READING